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Re: [PATCH 1/2] Documentation: afe4404: Add DT bindings for the AFE4404 heart monitor

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  Re: [PATCH 1/2] Documentation: afe4404: Add DT bindings for the  AFE4404 heart monitor Rob Herring <robh+dt@kernel.org> - 2015-10-31 19:50 +0100
    Re: [PATCH 1/2] Documentation: afe4404: Add DT bindings for the  AFE4404 heart monitor "Andrew F. Davis" <afd@ti.com> - 2015-11-02 17:10 +0100

#1260038 — Re: [PATCH 1/2] Documentation: afe4404: Add DT bindings for the AFE4404 heart monitor

gmail thinks this is spam BTW.

On Sat, Oct 31, 2015 at 11:31 AM, Andrew F. Davis <afd@ti.com> wrote:
> Add the TI afe4404 heart monitor DT bindings documentation.
> Create health directory created under iio.
>
> Signed-off-by: Andrew F. Davis <afd@ti.com>
> ---
>  .../devicetree/bindings/iio/health/afe4404.txt     | 27 ++++++++++++++++++++++
>  1 file changed, 27 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/iio/health/afe4404.txt
>
> diff --git a/Documentation/devicetree/bindings/iio/health/afe4404.txt b/Documentation/devicetree/bindings/iio/health/afe4404.txt
> new file mode 100644
> index 0000000..d377033
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/iio/health/afe4404.txt
> @@ -0,0 +1,27 @@
> +* Texas Instruments AFE4404 Heart rate and Pulse Oximeter
> +
> +Required properties:
> + - compatible          : Should be "ti,afe4404".
> + - reg                 : I2C address of the device.
> + - led-supply          : Regulator supply to the device.

Is led correct name or copy-n-paste? The datasheet has tx_sup and
rx_sup for supplies.

> + - interrupt-parent    : Phandle to he parent interrupt controller.
> + - interrupts          : The interrupt line the device ADC_RDY pin is connected to.
> +
> +Optional properties:
> + - reset-gpios         : GPIO used to reset the device.
> +
> +Example:
> +
> +&i2c2 {
> +       heart_mon@58 {
> +               compatible = "ti,afe4404";
> +               reg = <0x58>;
> +
> +               led-supply = <&vbat>;
> +
> +               interrupt-parent = <&gpio1>;
> +               interrupts = <28 IRQ_TYPE_EDGE_RISING>;
> +
> +               reset-gpios = <&gpio1 16 GPIO_ACTIVE_LOW>;
> +       };
> +};
> --
> 1.9.1
>
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#1260752

On 10/31/2015 01:44 PM, Rob Herring wrote:
> gmail thinks this is spam BTW.
>

Strange, the mailing lists do too.

> On Sat, Oct 31, 2015 at 11:31 AM, Andrew F. Davis <afd@ti.com> wrote:
>> Add the TI afe4404 heart monitor DT bindings documentation.
>> Create health directory created under iio.
>>
>> Signed-off-by: Andrew F. Davis <afd@ti.com>
>> ---
>>   .../devicetree/bindings/iio/health/afe4404.txt     | 27 ++++++++++++++++++++++
>>   1 file changed, 27 insertions(+)
>>   create mode 100644 Documentation/devicetree/bindings/iio/health/afe4404.txt
>>
>> diff --git a/Documentation/devicetree/bindings/iio/health/afe4404.txt b/Documentation/devicetree/bindings/iio/health/afe4404.txt
>> new file mode 100644
>> index 0000000..d377033
>> --- /dev/null
>> +++ b/Documentation/devicetree/bindings/iio/health/afe4404.txt
>> @@ -0,0 +1,27 @@
>> +* Texas Instruments AFE4404 Heart rate and Pulse Oximeter
>> +
>> +Required properties:
>> + - compatible          : Should be "ti,afe4404".
>> + - reg                 : I2C address of the device.
>> + - led-supply          : Regulator supply to the device.
>
> Is led correct name or copy-n-paste? The datasheet has tx_sup and
> rx_sup for supplies.
>

Looking back at the data sheet it looks like it also has an io_sup.
rx_sup seems to be the supply that must be on to keep the device on.
io_sup and tx_sup can be disabled without losing register values and
reseting the device.

I'm not sure if it makes sense to list the needed supplies, so I may
just rename led-supply to tx_sup-supply and have the be the only one.

>> + - interrupt-parent    : Phandle to he parent interrupt controller.
>> + - interrupts          : The interrupt line the device ADC_RDY pin is connected to.
>> +
>> +Optional properties:
>> + - reset-gpios         : GPIO used to reset the device.
>> +
>> +Example:
>> +
>> +&i2c2 {
>> +       heart_mon@58 {
>> +               compatible = "ti,afe4404";
>> +               reg = <0x58>;
>> +
>> +               led-supply = <&vbat>;
>> +
>> +               interrupt-parent = <&gpio1>;
>> +               interrupts = <28 IRQ_TYPE_EDGE_RISING>;
>> +
>> +               reset-gpios = <&gpio1 16 GPIO_ACTIVE_LOW>;
>> +       };
>> +};
>> --
>> 1.9.1
>>
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